Replying to Persuasive Speech on skiing need help!!!!!

OK so I need to do a persuavive speech for ym speech class, and we need to persuade people to buy a product. I figure I'll do some kid of ski. It would be easy for me to do, but I don't know how to explain them so non-skiers would understand what I'm trying to sell. I was thinking of doing the Rossignol Sctatch FS because it's what I have and I can bring them into class to show people. Any suggestions on how to do this speech and have everyone understand what I'm saying? Btw the teacher is a bitch and will grade me harshly especially if she dopesn't understand the stuff I'm talking about.